Ramnit is malware that’s infecting PCs running Microsoft Windows. When a PC has been infected, the malware will disable a series of Windows security features (Windows Defender, Windows Firewall, User Account Control), Windows Update, and remove the ability to install other antivirus software. Once a PC is infected, the malware will use it to collect account information for a series of on-line services (financial, banking, social, professional) by creating fake copies of legitimate websites.